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15 N‐marked aphids for predation studies under field conditions
Author(s) -
Nienstedt K.M.,
Poehling H.M.
Publication year - 2000
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1046/j.1570-7458.2000.00633.x
Subject(s) - homoptera , aphididae , sitobion avenae , biology , aphid , nutrient , botany , predation , horticulture , pest analysis , agronomy , ecology
Individuals of Sitobion avenae (F.) (Homoptera: Aphididae) were marked with the stable isotope 15 N through feeding on cereal seedlings which were immersed in a 15 N‐enriched nutrient solution. Increased 15 N‐contents were obtained in all aphids with no detrimental effect on survival and fertility. When 15 N‐marked aphids were transferred to non 15 N‐enriched seedlings, after a short initial decreasing phase, 15 N‐contents remained nearly constant in time. A content of 10% 15 N in the nutrient solution of the seedlings was sufficient for marking the aphids.